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wtw TetraCon 925 Operating Manual

wtw TetraCon 925 Operating Manual

Standard conductivity measuring cell

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Operating manual
®
TetraCon
925
Standard conductivity measuring cell
ba75824e02
02/2011

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Summary of Contents for wtw TetraCon 925

  • Page 1 Operating manual ® TetraCon Standard conductivity measuring cell ba75824e02 02/2011...
  • Page 2 The latest version of the present operating manual can be found on the Internet under www.WTW.com. © Copyright Weilheim 2009, WTW GmbH Reprinting - even as excerpts - is only allowed with the explicit written authorization of WTW GmbH, Weilheim. Printed in Germany. ba75824e02 02/2011...
  • Page 3 ® TetraCon Contents ® TetraCon 925 - Contents Overview ......... 12 Structure and function .
  • Page 4: Overview

    The digital transmission technique guarantees the failure-free communication with the meter even with long connection cables. If the sensor firmware is enhanced by WTW, it can be updated via the meter. Recommended fields of application On site measurements in rivers, lakes and wastewater...
  • Page 5: Cleaning

    ® TetraCon Cleaning Cleaning CAUTION To clean the sensor, disconnect it from the instrument. Outside cleaning We recommend to clean the sensor thoroughly, especially before measuring low conductivity values. Contamination Cleaning procedure Lime sediments Immerse in acetic acid for 5 minutes (volume share = 10 %) Fat/oil Clean with warm water that contains...
  • Page 6: Technical Data

    ® Technical data TetraCon Technical data General data General features Measuring principle Four-electrodes measurement Cell constant 0.475 cm ±1.5 % Temperature sensor Integrated NTC 30 (30 k at 25 °C / 77 °F) 176.0 Dimensions (in mm) 120.0 15.3 21.7 Weight Approx.
  • Page 7 ® TetraCon Technical data Measurement Conductivity measuring 1 S/cm ... 2 S/cm conditions range Temperature range -5 ... 70 °C (100 °C) (23 ... 158 °F (212 °F)) Max. admissible 2.5 x 10 Pa (2.5 bar) overpressure Minimum depth of 36 mm immersion Maximum depth of...
  • Page 8: Measuring Ranges, Resolution, Accuracy

    ® Technical data TetraCon Measuring ranges, resolution, accuracy Measuring ranges, Measured parameter Measuring range Resolution resolution ӕ [µS/cm] 0.0 ... 199.9 200 ... 1999 ӕ [mS/cm] 2.00 ... 19.99 0.01 20.0 ... 199.9 200 ... 2000 ρ ( Resistivity) [Ohm*cm] 0.50 ...
  • Page 10 Wissenschaftlich-Technische Werkstätten GmbH Dr.-Karl-Slevogt-Straße 1 D-82362 Weilheim Germany Tel: +49 (0) 881 183-0 +49 (0) 881 183-100 Fax: +49 (0) 881 183-420 E-Mail: Info@WTW.com Internet: http://www.WTW.com...